From: Joseph McDonald <joe@...>
Date: 2001-06-16T10:03:27+09:00
Subject: [ruby-talk:16523] Re: forking server


JM> Here's a stab at a forking server.  The problem is that it exits
JM> after the first connection and I don't understand why...
JM> Can anyone enlighten me?

Ah, I see the problem... I thought that the "trap" was working in the
child, but really it's in the parent.  Just removed that "exit" and
things seem to be working fine (also added a new_sock.shutdown):

require 'socket'

trap("CLD") {
  pid = Process.wait
  puts "Child pid #{pid}: terminated"
}

s = TCPServer.new("0.0.0.0",8888)
while(new_sock = s.accept)
  pid = fork
  puts "pid: #{pid.inspect}"
  if(pid == nil)
    # Child process
    # do stuff here...
    line = new_sock.gets
    line.chop!
    puts line
    new_sock.puts "you said: #{line}"
    new_sock.shutdown
    exit
  end
end
puts "exiting..."
s.close

regards,
-joe